FAQ Frequently Asked Questions Are your earplugs made of safe materials? All our earplugs use medical-grade soft silicone, hypoallergenic, no irritation even for long-time wear. How much noise can these earplugs block? Our balanced acoustic filters reduce harmful loud noise while keeping clear ambient sound for safety. Are the earplugs reusable? How to clean them? Fully reusable. Simply wash with mild soap and cool water, air dry before storage. Do you offer worldwide shipping? We ship to most countries globally, tracking number provided once dispatched. What’s your return policy? 30-day free return for unused, undamaged products if you’re unsatisfied. Do these earplugs fit all ear sizes? Soft flexible silicone fits most ear canals; Sleep series has slim compact shape for small ears.